paragraph1\phpFCM\Tests\MessageTest::testThrowsExceptionWhenDifferentRecepientTypesAreRegistered PHP Method

    public function testThrowsExceptionWhenDifferentRecepientTypesAreRegistered()
    {
        $this->setExpectedException(\InvalidArgumentException::class, 'mixed recepient types are not supported by FCM');
        $this->fixture->addRecipient(new Topic('breaking-news'))->addRecipient(new Device('token'));
    }